Specifically, you seek records related to practical instructions on how to rebuild society after a nuclear war.
We searched our holdings in Record Group 397, Records of the Defense Civil Preparedness Agency. We identified the series External Publications, 1955-1976 which may include records related to your query. A full citation is provided here for your reference:
Record Group 397
Records of the Defense Civil Preparedness Agency
External Publications, 1955-1976
Entry A1 56
Boxes 1 thru 37@ 650/42/30/2
We will be happy to make the records and their finding aids available to you or your representative in the Textual Research Room (Room 2000) here at the National Archives at College Park, Maryland. Please visit our website for information about visiting the National Archives in College Park, MD, including how to schedule a research visit.